What is the appropriate axial position in cannulated screw fixation for femoral neck fractures? A finite element analysis.

ABSTRACT:

Background

Cannulated screw fixation is a common surgical treatment for femoral neck fractures; however, there is limited information on the optimal axial position of the screws. Herein, we aimed to investigate the impact of axial screw position on surgical stability in femoral neck fracture models fixed with three cannulated screws.

Methods

Eighteen finite element models (FEMs) replicating Pauwels type II femoral neck fractures were constructed and tested using nine normal and nine osteoporotic bone models. Each FEM simulated combinations of three different screw positions (anterior, central, and posterior) in the axial view and three models (type 1: 8° angles, 10 mm inter-screw interval; type 2: 6° angles, 10 mm inter-screw interval; type 3: 8° angles, 6 mm inter-screw int

SUBMITTER: Kwak DK 

PROVIDER: S-EPMC12042349 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature